Scientists are looking for new ways of satisfying the world's ever-growing hunger for meat.

Dutch biologists have used stem cells to create strips of muscle tissue with the aim of producing the first lab-grown hamburger later this year. So far they have produced whitish pale muscle-like strips, each of them around 2 and a half centimeters long and less than a centimeter wide.

The aim of the research is to develop a more efficient way of producing meat than rearing animals. The first lab-grown hamburger is expected to cost around 250-thousand Euros to produce.